Fanuc Keep Relay Parameters Exclusive -

The machine builder had programmed these two functions to be . In the ladder logic, a "Safety Interlock" was written so that if one bit was (ON), the other was forced to (OFF).

They typically control machine-specific options like auto-door behavior, chip conveyor timers, or enabling a 4th axis. Documentation: Because they are builder-defined, the meanings of cap K 99.9 fanuc keep relay parameters exclusive

If a keep relay refuses to change or reverts after a power cycle, it is often because: The machine builder had programmed these two functions to be

Temporarily shielding external alarms or bypassing faulty sensor inputs (e.g., conveyor rotation detection) to keep the machine running. Safety & Interlocks: Managing interlocks such as chuck clamp signals or ATC (Automatic Tool Changer) safety conditions. System Configuration: Set "PARAMETER WRITE" to

To view or change these parameters, follow this standard procedure on most Fanuc controls: Enable Parameter Write (PWE): function key. Set "PARAMETER WRITE" to